Boris Johnson is expected to back a Brexit at 10pm tonight

London's
Mayor Boris Johnson poses for a photo with school children after
a game of Street Rugby with a group of Tokyo children, outside
the Tokyo Square Gardens building October 15,
2015.REUTERS/Issei
Kato

Boris Johnson is expected to back a so-called Brexit — British
exit from Europe — in his Daily Telegraph column published online
at 10 p.m. GMT (5 p.m. ET) on Sunday.

The Daily Telegraph is reporting that the Mayor of London and
Member of Parliament will reveal his stance on the upcoming
referendum on European Union membership in his weekly column for
the paper.

Johnson is understood to be a euroskeptic and several political
journalists are tipping him to back the "leave" campaign,
including The Sunday Times political editor Tim Shipman, ITV's
Robert Peston, and, crucially, the BBC's political editor Laura
Kuenssberg.

Kuenssberg's tweet is seen as particularly authoritative because
Johnson is believed to have done a TV interview with her
explaining his logic in backing the leave campaign.

A City financier who advises Boris Johnson on pensions has also
attacked David Cameron's EU reforms as "no more than a whingers’
charter",
according to an email seen by Sky News. It suggest the mood
around Johnson is anti-EU.